:root{
  --bg:#06111c;--bg2:#081827;--panel:#0d2031;--panel2:#10283d;--line:#2a4b61;
  --text:#f7fbff;--muted:#a9bbc9;--cyan:#59d2ff;--cyan2:#9fe8ff;--max:1380px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#06111c;color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.5}
a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.wrap{width:min(var(--max),calc(100% - 56px));margin:auto}.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:16px;z-index:999;background:white;color:#000;padding:10px 14px;border-radius:8px}
.header{position:sticky;top:0;z-index:50;background:rgba(4,13,22,.96);border-bottom:1px solid rgba(97,177,215,.25);backdrop-filter:blur(14px)}
.nav{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;min-width:max-content}.brand img{width:48px;height:48px;object-fit:contain}.brand-text{display:grid;line-height:1.05}.brand-text strong{font-size:1.12rem}.brand-text small{font-size:.72rem;color:#9fb5c4;margin-top:4px}.navlinks{display:flex;align-items:center;gap:24px;font-size:.88rem}.navlinks a{color:#dce8ef}.navlinks a:hover,.navlinks a.active{color:var(--cyan)}.navlinks .cta{padding:10px 16px;border-radius:8px;background:var(--cyan);color:#03121b;font-weight:800}.menu{display:none;background:#0d2031;color:white;border:1px solid var(--line);padding:9px 12px;border-radius:8px}
.hero{background:linear-gradient(90deg,#071b2e 0%,#081827 46%,#06121e 100%);border-bottom:1px solid var(--line)}.hero-grid{display:grid;grid-template-columns:44% 56%;min-height:540px}.hero-copy{padding:62px 42px 42px 0;display:flex;flex-direction:column;justify-content:center}.eyebrow{font-size:.76rem;font-weight:900;text-transform:uppercase;letter-spacing:.13em;color:#6ed9ff}.hero h1{font-size:clamp(4rem,6.2vw,6.4rem);line-height:.92;letter-spacing:-.055em;margin:14px 0 20px}.hero h1 span{color:var(--cyan)}.hero-copy>p{max-width:610px;font-size:1.12rem;color:#dce6ed;margin:0}.actions{display:flex;gap:12px;margin:27px 0 34px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 19px;border-radius:8px;font-weight:800;border:1px solid #41677d}.btn.primary{background:var(--cyan);color:#04131c;border-color:var(--cyan)}.btn.secondary{background:#091826;color:#f8fcff}.proof{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.proof-item{display:flex;align-items:flex-start;gap:10px}.proof-icon{width:34px;height:34px;flex:0 0 34px;border:2px solid var(--cyan);border-radius:50%;display:grid;place-items:center;color:var(--cyan);font-weight:900}.proof-text{display:grid}.proof-text strong{font-size:.82rem}.proof-text small{font-size:.71rem;color:#a9bbc8;margin-top:2px}.hero-media{min-height:540px;overflow:hidden;position:relative}.hero-media:before{content:"";position:absolute;z-index:1;inset:0;background:linear-gradient(90deg,#081827 0%,rgba(8,24,39,.18) 18%,transparent 42%);pointer-events:none}.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.categories{background:#071521;border-bottom:1px solid var(--line)}.category-grid{display:grid;grid-template-columns:repeat(5,1fr)}.category{min-height:104px;display:flex;flex-direction:column;align-items:center;justify-content:center;border-right:1px solid rgba(77,139,172,.28);text-align:center}.category:last-child{border-right:0}.category svg{margin-bottom:6px}.category strong{font-size:.92rem}.category small{font-size:.72rem;color:#9fb2bf;margin-top:2px}.category:hover{background:#0a1d2c}
.section{padding:34px 0 30px;background:linear-gradient(180deg,#071521,#06121d)}.section.guides{padding-top:16px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:18px}.section-head h2{font-size:2rem;letter-spacing:-.035em;margin:0}.section-head p{margin:3px 0 0;color:#a9bbc9}.section-head>a{font-size:.86rem;font-weight:800;color:var(--cyan);white-space:nowrap}.kicker{font-size:.67rem;text-transform:uppercase;letter-spacing:.13em;color:#69d7ff;font-weight:900}
.products{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.product{overflow:hidden;border:1px solid #2a4b61;border-radius:8px;background:#0e2133;display:flex;flex-direction:column;min-width:0}.product-image{height:210px;background:#f3f5f6;overflow:hidden}.product-image img{width:100%;height:100%;object-fit:contain}.product-body{padding:14px;display:flex;flex-direction:column;flex:1}.product h3{font-size:.93rem;line-height:1.22;margin:0 0 9px}.product p{font-size:.75rem;line-height:1.46;color:#afc0cc;margin:0 0 12px}.product .buy{margin-top:auto;background:var(--cyan);color:#04131c;text-align:center;padding:9px 8px;border-radius:6px;font-size:.72rem;font-weight:850}.product .buy:hover{background:#84e0ff}
.guide-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.guide{overflow:hidden;border:1px solid #294a60;border-radius:8px;background:#0e2133}.guide img{width:100%;height:152px;object-fit:cover}.guide-body{padding:12px}.guide h3{font-size:.92rem;line-height:1.22;margin:0 0 8px}.guide p{font-size:.75rem;line-height:1.45;color:#adbec9;margin:0 0 10px;min-height:44px}.guide b{font-size:.74rem;color:var(--cyan)}
.newsletter{background:linear-gradient(90deg,rgba(5,16,25,.58),rgba(5,16,25,.42)),url('/assets/img/brand-banner.png') center 45%/cover;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.newsletter-inner{min-height:132px;display:flex;justify-content:space-between;align-items:center;gap:32px}.newsletter h2{font-size:1.6rem;margin:0}.newsletter p{margin:4px 0 0}.newsletter form{display:flex;gap:8px;width:min(520px,46vw)}.newsletter input{flex:1;background:#06121d;color:white;border:1px solid #355b72;border-radius:7px;padding:13px 14px}.newsletter button{background:var(--cyan);color:#04131c;border:0;border-radius:7px;padding:0 22px;font-weight:850}
.footer{background:#05101a;padding:32px 0 16px}.footer-grid{display:grid;grid-template-columns:1.55fr .75fr .75fr .75fr;gap:48px}.footer .brand img{width:46px;height:46px}.footer p{max-width:420px;font-size:.82rem;color:#9eb1bf}.footer h3{font-size:.86rem;margin:7px 0 12px}.footer-links{display:grid;gap:7px}.footer-links a{font-size:.79rem;color:#a8b8c4}.social{display:flex;gap:9px;margin-top:14px}.social a{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#eef3f5;color:#06121d;font-size:.66rem;font-weight:900}.disclosure{font-size:.73rem;color:#8297a6;margin-top:24px}.copyright{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.07);padding-top:14px;margin-top:16px;font-size:.72rem;color:#718596}.copyright span:last-child{color:#59d2ff}
@media(max-width:1180px){.navlinks{gap:14px}.hero-grid{grid-template-columns:1fr 1fr}.hero h1{font-size:4.6rem}.proof{grid-template-columns:1fr}.products,.guide-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:850px){.wrap{width:min(var(--max),calc(100% - 34px))}.menu{display:block}.navlinks{display:none;position:absolute;top:70px;left:17px;right:17px;background:#071725;border:1px solid #294a60;border-radius:12px;padding:16px;flex-direction:column;align-items:flex-start}.navlinks.open{display:flex}.hero-grid{grid-template-columns:1fr}.hero-copy{padding:44px 0 28px}.hero-media{min-height:390px}.category-grid{grid-template-columns:repeat(2,1fr)}.category:nth-child(5){grid-column:1/-1}.products,.guide-grid{grid-template-columns:repeat(2,1fr)}.newsletter-inner{display:block;padding:26px 0}.newsletter form{width:100%;margin-top:14px}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.brand-text small{display:none}.hero h1{font-size:3.35rem}.hero-copy>p{font-size:1rem}.hero-media{min-height:300px}.category-grid,.products,.guide-grid{grid-template-columns:1fr}.category:nth-child(5){grid-column:auto}.product-image{height:240px}.guide img{height:210px}.section-head{display:block}.section-head>a{display:inline-block;margin-top:10px}.newsletter form{display:grid;grid-template-columns:1fr}.newsletter button{padding:12px}.footer-grid{grid-template-columns:1fr}.copyright{display:grid;gap:6px}}

/* v6 refinements */
.youtube-nav{display:inline-flex!important;align-items:center;gap:6px}.youtube-nav-play{display:grid;place-items:center;width:18px;height:14px;border-radius:4px;background:#ff0033;color:white;font-size:.56rem;line-height:1;padding-left:1px}.hero-media img{image-rendering:auto}.hero-media:after{content:"Watch on YouTube";position:absolute;z-index:2;right:24px;bottom:22px;padding:9px 13px;border-radius:999px;background:rgba(255,0,51,.93);color:#fff;font-size:.76rem;font-weight:900;letter-spacing:.01em;box-shadow:0 8px 24px rgba(0,0,0,.35);pointer-events:none}
.youtube-callout{background:linear-gradient(100deg,#071521 0%,#0a1e2d 58%,#111922 100%);border-top:1px solid rgba(74,145,181,.34);border-bottom:1px solid rgba(74,145,181,.34);padding:24px 0}.youtube-callout-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}.youtube-callout-brand{display:flex;align-items:center;gap:16px;min-width:0}.youtube-callout-brand>img{width:70px;height:70px;object-fit:contain;flex:0 0 auto}.youtube-label{display:inline-flex;align-items:center;gap:7px;color:#fff;font-size:.72rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.youtube-label span{display:grid;place-items:center;width:24px;height:17px;border-radius:5px;background:#ff0033;font-size:.68rem;padding-left:1px}.youtube-callout h2{font-size:1.55rem;line-height:1.1;letter-spacing:-.025em;margin:5px 0 4px}.youtube-callout p{margin:0;color:#9fb3c0;font-size:.83rem;max-width:720px}.youtube-button{display:flex;align-items:center;gap:11px;min-width:max-content;background:#ff0033;color:#fff;padding:10px 16px 10px 11px;border-radius:9px;font-weight:800;box-shadow:0 8px 25px rgba(255,0,51,.13)}.youtube-button:hover{background:#e5002e}.youtube-button-play{display:grid;place-items:center;width:34px;height:26px;border-radius:7px;background:#fff;color:#ff0033;font-size:.8rem;padding-left:2px}.youtube-button>span:last-child{display:grid;line-height:1.1}.youtube-button strong{font-size:.78rem}.youtube-button small{font-size:.63rem;font-weight:600;opacity:.82;margin-top:3px}
.newsletter{position:relative;overflow:hidden;background:linear-gradient(100deg,#081723 0%,#0a2232 54%,#0a1823 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.newsletter:before{content:"";position:absolute;inset:-50%;background:radial-gradient(circle at 28% 50%,rgba(61,185,230,.12),transparent 28%),radial-gradient(circle at 78% 50%,rgba(236,155,60,.07),transparent 26%);pointer-events:none}.newsletter-inner{position:relative;z-index:1}.newsletter input{background:#06131f;border-color:#27485c}.newsletter button{box-shadow:0 7px 22px rgba(89,210,255,.12)}
.social{display:block;margin-top:16px}.youtube-footer{width:max-content;display:flex!important;align-items:center!important;gap:9px!important;height:auto!important;padding:8px 12px 8px 8px!important;border-radius:9px!important;background:#ff0033!important;color:#fff!important}.youtube-footer-play{display:grid;place-items:center;width:31px;height:23px;border-radius:6px;background:#fff;color:#ff0033;font-size:.72rem;padding-left:2px}.youtube-footer>span:last-child{display:grid;line-height:1.05}.youtube-footer strong{font-size:.76rem}.youtube-footer small{font-size:.61rem;margin-top:3px;opacity:.82}
@media(max-width:850px){.youtube-callout-inner{align-items:flex-start;flex-direction:column}.youtube-button{min-width:0}.hero-media:after{right:16px;bottom:16px}}
@media(max-width:560px){.youtube-callout-brand>img{width:56px;height:56px}.youtube-callout h2{font-size:1.3rem}.youtube-button{width:100%;justify-content:center}.hero-media:after{font-size:.68rem}}

/* ================= v7 mobile-first refinement ================= */
.hero-mobile-image{display:none}

@media (max-width: 760px){
  html,body{max-width:100%;overflow-x:hidden}
  body{font-size:16px}
  .wrap{width:calc(100% - 32px)}

  .header{position:sticky;top:0}
  .nav{min-height:64px;gap:10px}
  .brand{gap:9px;min-width:0}
  .brand img{width:40px;height:40px}
  .brand-text strong{font-size:.9rem;white-space:nowrap}
  .brand-text small{display:none}
  .menu{display:inline-flex;align-items:center;justify-content:center;min-width:48px;min-height:44px;padding:8px 11px;font-size:.78rem;font-weight:800}
  .navlinks{top:64px;left:12px;right:12px;padding:10px;background:#071725;box-shadow:0 18px 45px rgba(0,0,0,.45);border-radius:12px;gap:0}
  .navlinks a{width:100%;min-height:44px;display:flex;align-items:center;padding:9px 10px;border-bottom:1px solid rgba(255,255,255,.06);font-size:.92rem}
  .navlinks a:last-child{border-bottom:0}
  .navlinks .cta{margin-top:7px;justify-content:center}

  .hero{padding:0}
  .hero-grid{display:block}
  .hero-copy{padding:30px 0 20px}
  .eyebrow{font-size:.66rem;letter-spacing:.11em}
  .hero h1{font-size:clamp(2.85rem,14vw,4rem);line-height:.92;margin:10px 0 16px;letter-spacing:-.05em}
  .hero-copy>p{font-size:1rem;line-height:1.52;max-width:none}
  .actions{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:20px 0}
  .btn{min-height:46px;padding:11px 12px;font-size:.82rem;text-align:center}
  .proof{grid-template-columns:1fr;gap:8px;margin-top:4px}
  .proof-item{align-items:center;background:rgba(8,25,39,.72);border:1px solid rgba(78,134,166,.22);border-radius:10px;padding:9px 10px}
  .proof-icon{width:30px;height:30px;flex-basis:30px;border-width:1.5px}
  .proof-text strong{font-size:.78rem}
  .proof-text small{font-size:.69rem}

  .hero-media{display:block;min-height:0;height:auto;aspect-ratio:16/10;margin:4px 0 18px;border:1px solid #2c5269;border-radius:12px;overflow:hidden;background:#050b10;position:relative}
  .hero-media:before{display:none}
  .hero-media:after{right:10px;bottom:9px;font-size:.64rem;padding:7px 10px}
  .hero-desktop-image{display:none!important}
  .hero-mobile-image{display:block!important;width:100%!important;height:100%!important;object-fit:cover!important;object-position:center 12%!important}

  .categories{padding:10px 0;border-top:1px solid var(--line)}
  .category-grid{display:flex;overflow-x:auto;gap:9px;padding:0 16px 4px;margin:0 -16px;scroll-snap-type:x mandatory;scrollbar-width:none}
  .category-grid::-webkit-scrollbar{display:none}
  .category{scroll-snap-align:start;flex:0 0 126px;min-height:88px;border:1px solid rgba(77,139,172,.26)!important;border-radius:11px;padding:9px 8px;background:#091a28}
  .category svg{width:27px;height:27px;margin-bottom:3px}
  .category strong{font-size:.78rem}
  .category small{font-size:.62rem;line-height:1.2}

  .section{padding:28px 0 25px}
  .section-head{display:flex;align-items:flex-end;gap:12px;margin-bottom:13px}
  .section-head h2{font-size:1.65rem;line-height:1.04}
  .section-head p{font-size:.82rem;line-height:1.35}
  .section-head>a{font-size:.72rem}
  .kicker{font-size:.61rem}

  .products,.guide-grid{display:flex;overflow-x:auto;gap:11px;margin:0 -16px;padding:0 16px 8px;scroll-snap-type:x mandatory;scrollbar-width:none}
  .products::-webkit-scrollbar,.guide-grid::-webkit-scrollbar{display:none}
  .product,.guide{scroll-snap-align:start;flex:0 0 min(82vw,315px)}
  .product-image{height:205px}
  .product-body{padding:12px}
  .product h3{font-size:.9rem}
  .product p{font-size:.76rem;line-height:1.42}
  .product .buy{min-height:44px;display:flex;align-items:center;justify-content:center;font-size:.76rem}
  .guide img{height:176px}
  .guide-body{padding:11px}
  .guide h3{font-size:.9rem}
  .guide p{font-size:.76rem;min-height:0}

  .youtube-callout{padding:18px 0}
  .youtube-callout-inner{gap:14px}
  .youtube-callout-brand{align-items:flex-start;gap:11px}
  .youtube-callout-brand>img{width:50px;height:50px}
  .youtube-callout h2{font-size:1.2rem;margin-top:3px}
  .youtube-callout p{font-size:.76rem;line-height:1.42}
  .youtube-button{width:100%;justify-content:center;min-height:48px;padding:9px 12px}

  .newsletter{padding:0}
  .newsletter-inner{min-height:0;padding:22px 0;display:block}
  .newsletter h2{font-size:1.28rem;line-height:1.1}
  .newsletter p{font-size:.78rem;line-height:1.4;margin-top:6px}
  .newsletter form{display:grid;grid-template-columns:1fr;width:100%;margin-top:13px;gap:8px}
  .newsletter input,.newsletter button{min-height:46px;width:100%}
  .newsletter button{padding:11px 14px}

  .footer{padding:24px 0 14px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:22px 18px}
  .footer-grid>div:first-child{grid-column:1/-1}
  .footer .brand img{width:42px;height:42px}
  .footer p{font-size:.78rem;line-height:1.45;max-width:none}
  .footer h3{font-size:.78rem;margin:0 0 8px}
  .footer-links{gap:5px}
  .footer-links a{font-size:.76rem;min-height:30px;display:flex;align-items:center}
  .youtube-footer{min-height:46px}
  .disclosure{font-size:.69rem;line-height:1.4;margin-top:20px}
  .copyright{font-size:.68rem;gap:3px}
}

@media (max-width: 420px){
  .wrap{width:calc(100% - 24px)}
  .brand-text strong{font-size:.82rem}
  .actions{grid-template-columns:1fr}
  .hero-media{aspect-ratio:16/11}
  .category-grid,.products,.guide-grid{margin-left:-12px;margin-right:-12px;padding-left:12px;padding-right:12px}
  .product,.guide{flex-basis:86vw}
  .footer-grid{grid-template-columns:1fr 1fr;gap:20px 14px}
}

/* ================= v9 focused mobile refinement ================= */
@media (max-width:760px){
  .hero-copy{padding:24px 0 14px}
  .hero h1{font-size:clamp(2.25rem,10.8vw,3rem);line-height:.94;margin:8px 0 12px;letter-spacing:-.045em}
  .hero h1 span{white-space:nowrap}
  .hero-copy>p{font-size:.92rem;line-height:1.42}
  .actions{margin:16px 0 12px;gap:8px}
  .btn{min-height:42px;padding:9px 10px;font-size:.76rem}

  .proof{gap:6px;margin-top:0}
  .proof-item{min-height:44px;padding:6px 8px;border-radius:8px;gap:8px}
  .proof-icon{width:24px;height:24px;flex-basis:24px;font-size:.72rem}
  .proof-text strong{font-size:.7rem;line-height:1.1}
  .proof-text small{font-size:.59rem;line-height:1.15;margin-top:1px}

  .categories{padding:10px 0}
  .category-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:0;margin:0;overflow:visible}
  .category{min-height:76px;flex:none;border:1px solid rgba(77,139,172,.26)!important;border-radius:10px;padding:7px 6px;background:#091a28}
  .category:nth-child(5){grid-column:1/-1}
  .category svg{width:24px;height:24px;margin-bottom:2px}
  .category strong{font-size:.74rem}
  .category small{font-size:.58rem;line-height:1.15}

  .newsletter:before{display:none}
  .newsletter{background:#081923}
}
@media (max-width:420px){
  .hero h1{font-size:2.2rem}
  .actions{grid-template-columns:1fr 1fr}
  .btn{font-size:.7rem;padding:8px 6px}
}